God bless the BBC, quality entertainment from the start. Great acting (and remember it was recorded live), good script and fine cast. Some stock British character actors as well.... and a cat.
Such a shame the rest is lost.

In that they mindlessly erased so many classic shows from the '50s and 60s. All true Whovians know what those mindless Executives at the BBC did to Doctor Who (the Patrick Troughton era was particularly hard hit...but many of the William Hartnell shows were also mindlessly destroyed. "Marco Polo" which was (at least artistically) one of the most visually enticing serials during the 1963 season is sadly missing. While "The Tenth Planet" (Hartnell's last episode until "The Three Doctors: was important because it featured the First Appearance of the Cybermen which were, next to the Daleks themselves, the most popular (and frightening) of the original villans,
Then one turns to "The Web of Fear" during Patrick Troughton's time as the Doctor which features the second appearance of "The Yeti" but also introduces the character of Lethbridge-Stewart played then (and forever) by the late great Nicholas Courtney. He hadn't attained the rank of Brigadier yet but the thought that almost nothing of his first appearance has been preserved makes a true fan want to have a TARDIS just long enought to travel back and smack the guy who is about to order the erasure of these upside the head and shout "What are you THINKING???"
So it is with this, the first appearance of Professor Bernard Quatermass. Another in the great tradition of British Boffins who have so enriched both film and literature. Conan Doyle's Professor Challenger comes to mind at once as does "Dr. Royston" from X-The Unknown another classic from the hand of Jimmy Sangster.
But back to Quatermass. Now THIS is the guy who, sprung from the creative imagination of Nigel Kneale, brought ADULT science fiction to British television and paved the way for all that was to follow INCLUDING Doctor Who.
It is said that Kneale felt that Doctor Who was a rip-off of Quatermass and stayed angry about that for years. It wasn't true, though.
The Doctor was never human not even in the first episode broadcast. And while Gallifrey, and Timelords, and Regeneration hadn't been thought of yet that first show makes it clear that neither he nor his granddaughter are from Earth.
While Quatermass is all human even though (in his first outing) he appears so scientifically detached as to APPEAR inhuman...he is quite human.
And while it is sad that this first serial wasn't preserved in its entirety (neither the Hammer film NOR the live re-make really do it justice though both are good quite good on their own)I, for one, want to thank you for uploading these remaining episodes.
At least we can all help save these by storing them on DVD-R and External Storage Drives and so forth so that they need never be lost.
And Nigel, if you're reading this on a heavenly computer, let me say that though Doctor Who wasn't a rip-off of Quatermass I firmly believe that WITHOUT Quatermass the Doctor would never have been!